CN115420150B - Device for realizing pressure relief through polytetrafluoroethylene membrane deformation - Google Patents
Device for realizing pressure relief through polytetrafluoroethylene membrane deformation Download PDFInfo
- Publication number
- CN115420150B CN115420150B CN202211012213.7A CN202211012213A CN115420150B CN 115420150 B CN115420150 B CN 115420150B CN 202211012213 A CN202211012213 A CN 202211012213A CN 115420150 B CN115420150 B CN 115420150B
- Authority
- CN
- China
- Prior art keywords
- polytetrafluoroethylene
- shell
- annular membrane
- sealing ring
- unsealed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B12/00—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material
- F42B12/02—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect
- F42B12/36—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information
- F42B12/46—Projectiles, missiles or mines characterised by the warhead, the intended effect, or the material characterised by the warhead or the intended effect for dispensing materials; for producing chemical or physical reaction; for signalling ; for transmitting information for dispensing gases, vapours, powders or chemically-reactive substances
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a device for realizing pressure relief through polytetrafluoroethylene membrane deformation, which comprises an upper end cover, a lower end cover, a throwing device, an unsealed shell and a polytetrafluoroethylene annular membrane, wherein the axes of a revolving body of the upper end pressure sealing ring and the revolving body of the lower end pressure sealing ring are overlapped with those of the unsealed shell; because the shell is unsealed, the polytetrafluoroethylene annular membrane is sleeved outside the unsealed shell, and after the high-energy fuel is heated and expanded, the high-energy fuel flows into the space between the unsealed shell and the polytetrafluoroethylene annular membrane through the unsealed shell, so that the excessive internal stress is avoided, and the safety of the shell is ensured.
Description
Technical Field
The invention belongs to the technical field of pressure relief devices, relates to a deformation pressure relief device, and in particular relates to a device for realizing pressure relief through polytetrafluoroethylene membrane deformation.
Background
The detonation warhead is internally filled with high-energy fuel, the high-energy fuel is thrown into the air through the explosion throwing driving action of the explosive, the high-energy fuel is mixed with the air to form a large-range active cloud cluster, and the active cloud cluster is subjected to secondary detonation of the explosive to generate detonation of the body so as to release strong shock waves, so that the detonation warhead is one of weapons with maximum power.
The detonation warhead needs to work normally at an ambient temperature of between 40 ℃ below zero and 70 ℃ below zero, and the expansion coefficient of the high-energy fuel (1.24 multiplied by 10 -3 ) Specific warhead casing (1.22×10) -5 ) The high-energy fuel is incompressible material, the internal stress of the warhead shell is very high after the high-energy fuel expands at high temperature, and the shell is usually in a thin-wall structure and is too high in order not to influence the high-energy fuel throwing rangeThe internal stress of (2) can cause the warhead to be damaged at the weak part, so that the liquid agent is leaked, and serious accidents are caused.
The Chinese patent application (application number: 201911033140.8, 10 months in 2019) discloses an isobaric adjusting device for compensating the liquid phase charging volume change at different temperatures, when the liquid expands with heat and contracts with cold, the volume change of an inner cavity caused by the movement of a piston is compensated, the pressure of the inner cavity and the external pressure are always kept the same in the movement process of the piston, and the strength of a shell is ensured.
Guo Yan et al report in the literature "experimental study of FAE fuel explosive dispersion and fire-bouncing failure" (journal of explosives and powders, 2001, page 3, 37): in the process of throwing the detonation warhead, if three factors of burnup are satisfied: pre-ignition of temperature, fuel, oxygen will occur, which will lead to a significant reduction in body detonation warhead power.
The patent is the subject of earlier research of the applicant, but the device has the following problems in the popularization and application process:
the device contains air inside, and the device is put in the body detonation warhead casing inner chamber, is wrapped by high energy fuel, and when explosive explosion is thrown, the air that is wrapped by high energy fuel receives the compression, and the temperature risees sharply, and the three key elements of burnup (temperature, fuel, oxygen) satisfy simultaneously, have produced the phenomenon of ignition ahead. Thus, there is a need for improvements in the above patents.
Disclosure of Invention
Aiming at the technical problem of pre-ignition phenomenon in body detonation warhead throwing in the prior art, the invention aims to provide a device for realizing pressure relief through polytetrafluoroethylene membrane deformation.
In order to achieve the above task, the present invention adopts the following technical solutions:
the utility model provides a device through polytetrafluoroethylene membrane warp realization pressure release, includes upper end cover, lower extreme cover and throws the device, its characterized in that still includes non-closed casing, polytetrafluoroethylene annular membrane, upper end pressure seal ring, lower end pressure seal ring, wherein:
the non-closed shell is in a first cylinder shape and is a revolving body, and the axis of the revolving body is perpendicular to the ground;
the upper end of the outer side surface of the first cylinder body is provided with a circle of first upper conical bulges, and the diameter of the upper end of each first upper conical bulge is larger than that of the lower end of each first upper conical bulge; the lower end of the outer side surface of the first cylinder body is provided with a circle of first lower-end conical bulges, and the diameter of the upper end of each first lower-end conical bulge is smaller than that of the lower end; the side wall of the first cylinder body is provided with four rows of first circular through holes from top to bottom, and eight first circular through holes in each row;
the shape of the polytetrafluoroethylene annular membrane is a second cylinder, the second cylinder is a revolution body, and the polytetrafluoroethylene annular membrane is made of polytetrafluoroethylene;
the axis of the revolution body of the polytetrafluoroethylene annular membrane is coincident with the axis of the revolution body of the unsealed shell, the polytetrafluoroethylene annular membrane is positioned at the outer side of the unsealed shell, and the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane is contacted with the outer side surface of the first cylinder of the unsealed shell;
the upper end cover is in a third concentric circular plate shape and is a revolving body, and third circular through holes uniformly distributed in the circumferential direction are formed in the edge of the upper end face of the third concentric circular plate;
the axis of the revolution body of the upper end cover is coincident with the axis of the revolution body of the unsealed shell, the upper end cover is positioned at the upper end of the unsealed shell, and the lower end face of the third concentric circular plate of the upper end cover is contacted with the upper end face of the first cylinder body of the unsealed shell;
the lower end cover is in a fourth circular plate shape and is a revolving body, and fourth circular through holes uniformly distributed in the circumferential direction are formed in the edge of the lower end surface of the fourth circular plate;
the axis of the revolving body of the lower end cover is coincident with the axis of the revolving body of the unsealed shell, the lower end cover is positioned at the lower end of the unsealed shell, and the upper end face of the fourth circular plate of the lower end cover is contacted with the lower end face of the first cylinder of the unsealed shell;
the shape of the throwing device is a fifth cylinder and is a revolving body;
the axis of the revolution body of the scattering device is coincident with the axis of the revolution body of the non-closed shell, the lower end face of a fifth cylinder of the scattering device is connected with the middle part of the upper end face of a fourth circular plate of the lower end cover, and the upper end of the outer side face of the fifth cylinder of the scattering device is connected with the inner side face of a third concentric circular plate of the upper end cover;
the upper end pressing sealing ring is in the shape of a sixth concentric ring body and is a revolving body, the upper end surface of the sixth concentric ring body is provided with sixth threaded through holes uniformly distributed in the circumferential direction, the inner side surface of the sixth concentric ring body is a sixth conical surface, and the diameter of the upper end of the sixth conical surface is smaller than that of the lower end of the sixth conical surface;
the axis of the revolution body of the upper end pressing sealing ring coincides with the axis of the revolution body of the non-closed shell, the upper end pressing sealing ring is positioned at the outer side of the upper end of the polytetrafluoroethylene annular membrane, the sixth conical surface of the upper end pressing sealing ring is contacted with the upper end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane, a sixth screw is arranged in a third circular through hole of the upper end cover, the head of the sixth screw enters a sixth threaded through hole, and the sixth screw connects the upper end cover and the upper end pressing sealing ring;
the lower end pressing sealing ring is in the shape of a seventh concentric ring body and is a revolving body, the lower end surface of the seventh concentric ring body is provided with seventh threaded through holes uniformly distributed in the circumferential direction, the inner side surface of the seventh concentric ring body is a seventh conical surface, and the diameter of the upper end of the seventh conical surface is larger than that of the lower end of the seventh conical surface;
the axis of the revolving body of the lower end pressing sealing ring coincides with the axis of the revolving body of the non-closed shell, the lower end pressing sealing ring is positioned at the outer side of the lower end of the polytetrafluoroethylene annular membrane, the seventh conical surface of the lower end pressing sealing ring 7 is in contact with the lower end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane, a seventh screw is arranged in a fourth circular through hole of the lower end cover, the head of the seventh screw enters a seventh threaded through hole, and the seventh screw connects the lower end cover and the lower end pressing sealing ring;
the diameter of the first circular through hole of the unsealed shell 1 is 5 mm-6 mm.
The application method of the device for realizing pressure relief through polytetrafluoroethylene membrane deformation is characterized by comprising the following steps of:
step 1: assembling a polytetrafluoroethylene annular membrane with a non-closed shell;
step 2: assembling the lower end cover with a polytetrafluoroethylene annular membrane;
step 3: assembling the throwing device with the lower end cover;
step 4: assembling an upper end cover, a polytetrafluoroethylene annular membrane and a throwing device;
step 5: assembling an upper end pressing sealing ring with an upper end cover, and applying an upward force to the upper end pressing sealing ring through a sixth screw, wherein the upper end pressing sealing ring is tightly pressed by a sixth conical surface of the upper end pressing sealing ring and the outer side surface of the conical bulge of the first upper end of the unsealed shell, so that the pressure intensity born by the upper end of the polytetrafluoroethylene annular membrane is 0.8MPa;
step 6: assembling a lower end pressing sealing ring with a lower end cover, and applying downward force to the lower end pressing sealing ring through a seventh screw, wherein the seventh conical surface of the lower end pressing sealing ring and the outer side surface of the conical bulge of the first lower end of the unsealed shell tightly press the lower end of the polytetrafluoroethylene annular membrane, so that the pressure applied to the lower end of the polytetrafluoroethylene annular membrane is 0.8MPa;
step 7: the high-energy fuel is filled in the closed inner cavity formed by the unsealed shell, the upper end cover, the lower end cover and the throwing device, after the temperature is raised, the high-energy fuel is heated to expand, the volume is increased, the high-energy fuel extrudes the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane through the first circular through hole of the unsealed shell 1, the polytetrafluoroethylene annular membrane is elastically deformed to expand outwards, the high-energy fuel enters the interlayer between the unsealed shell and the polytetrafluoroethylene annular membrane, the unsealed shell is prevented from being propped up, and the safety of the unsealed shell is ensured.
Regarding the ratio of the distance between the lower end face of the first annular groove and the lower end face of the first lower annular boss of the body detonation warhead housing to the thickness of the second circular plate of the movable end cap, any one of the following 2 modes can be adopted:
implementation 1: the diameter of the first circular through hole of the non-closed shell is 5mm.
Implementation 2: the diameter of the first circular through hole of the non-closed shell is 6mm.
The invention relates to a device for realizing pressure relief through polytetrafluoroethylene membrane deformation, which brings the technical innovation that:
the adopted shell is unsealed, the polytetrafluoroethylene annular membrane is sleeved outside the unsealed shell, and after the high-energy fuel is heated and expanded, the high-energy fuel flows into the space between the unsealed shell and the polytetrafluoroethylene annular membrane through the unsealed shell, so that the overlarge internal stress is avoided, and the safety of the shell is ensured. Meanwhile, no air exists in the inner cavity of the unsealed shell, no air exists between the unsealed shell and the polytetrafluoroethylene annular membrane, when explosive explosion is thrown, no air is compressed in the fuel, three factors of burning cannot be met at the same time, the phenomenon of pre-ignition cannot occur, and the power of the body detonation warhead cannot be influenced.
Drawings
Fig. 1 is a schematic structural view of a device for realizing pressure relief by deformation of a polytetrafluoroethylene membrane. The marks in the figures represent: 1. the shell is not closed, 2, polytetrafluoroethylene annular membranes, 3, an upper end cover, 4, a lower end cover, 5, a throwing device, 6, an upper end pressing sealing ring and 7, a lower end pressing sealing ring.
The invention is described in further detail below with reference to the drawings and examples.
Detailed Description
First, the following examples are preferred examples of the present invention. The invention is not limited to the following examples, but all additions and equivalent changes based on the technical proposal of the invention are within the protection scope of the invention.
Example 1:
as shown in fig. 1, the embodiment provides a device for realizing pressure relief through polytetrafluoroethylene membrane deformation, which comprises an unsealed shell 1, a polytetrafluoroethylene annular membrane 2, an upper end cover 3, a lower end cover 4, a throwing device 5, an upper end pressure tight sealing ring 6 and a lower end pressure tight sealing ring 7;
the non-closed shell 1 is in a first cylinder shape and is a revolving body, and the axis of the revolving body is vertical to the ground;
the upper end of the outer side surface of the first cylinder of the unsealed shell 1 is provided with a circle of first upper conical protrusions, the diameter of the upper end of the first upper circular table-shaped protrusions of the unsealed shell 1 is larger than the diameter of the lower end of the first circular table-shaped protrusions, the lower end of the outer side surface of the first cylinder of the unsealed shell 1 is provided with a circle of first lower conical protrusions, the diameter of the upper end of the first lower circular table-shaped protrusions of the unsealed shell 1 is smaller than the diameter of the lower end, the side wall of the first cylinder of the unsealed shell 1 is provided with four rows of first circular through holes from top to bottom, and eight first circular through holes are arranged in each row;
the shape of the polytetrafluoroethylene annular membrane 2 is a second cylinder, the second cylinder of the polytetrafluoroethylene annular membrane 2 is a revolution body, and the polytetrafluoroethylene annular membrane 2 is made of polytetrafluoroethylene;
the axis of the revolution of the polytetrafluoroethylene annular membrane 2 is coincident with the axis of the revolution of the unsealed shell 1, the polytetrafluoroethylene annular membrane 2 is positioned outside the unsealed shell 1, and the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane 2 is contacted with the outer side surface of the first cylinder of the unsealed shell 1;
the shape of the upper end cover 3 is a third concentric circular plate, the third concentric circular plate of the upper end cover 3 is a revolution body, and the edge of the upper end surface of the third concentric circular plate of the upper end cover 3 is provided with third circular through holes uniformly distributed in the circumferential direction;
the axis of the revolution body of the upper end cover 3 is coincident with the axis of the revolution body of the unsealed shell 1, the upper end cover 3 is positioned at the upper end of the unsealed shell 1, and the lower end face of the third concentric circular plate of the upper end cover 3 is contacted with the upper end face of the first cylinder of the unsealed shell 1;
the shape of the lower end cover 4 is a fourth circular plate, the fourth circular plate of the lower end cover 4 is a revolving body, and the edge of the lower end surface of the fourth circular plate of the lower end cover 4 is provided with fourth circular through holes uniformly distributed in the circumferential direction;
the axis of revolution of the lower end cover 4 coincides with the axis of revolution of the unsealed shell 1, the lower end cover 4 is positioned at the lower end of the unsealed shell 1, and the upper end face of a fourth circular plate of the lower end cover 4 is contacted with the lower end face of the first cylinder of the unsealed shell 1;
the shape of the throwing device 5 is a fifth cylinder, and the fifth cylinder of the throwing device 5 is a revolution body;
the revolution axis of the throwing device 5 coincides with the revolution axis of the unsealed shell 1, the lower end surface of the fifth cylinder of the throwing device 5 is connected with the middle part of the upper end surface of the fourth circular plate of the lower end cover 4, the upper end of the outer side surface of the fifth cylinder of the throwing device 5 is connected with the inner side surface of the third concentric circular plate of the upper end cover 3,
the shape of the upper end pressing sealing ring 6 is a sixth concentric ring body, the sixth concentric ring body of the upper end pressing sealing ring 6 is a revolution body, the upper end face of the sixth concentric ring body of the upper end pressing sealing ring 6 is provided with sixth threaded through holes uniformly distributed in the circumferential direction, the inner side face of the sixth concentric ring body of the upper end pressing sealing ring 6 is a sixth conical surface, and the diameter of the upper end of the sixth conical surface of the upper end pressing sealing ring 6 is smaller than that of the lower end;
the axis of the revolution body of the upper end pressing sealing ring 6 coincides with the axis of the revolution body of the non-closed shell 1, the upper end pressing sealing ring 6 is positioned at the outer side of the upper end of the polytetrafluoroethylene annular membrane 2, the sixth conical surface of the upper end pressing sealing ring 6 is in contact with the upper end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane 2, a sixth screw is arranged in a third circular through hole of the upper end cover 3, the head of the sixth screw enters a sixth threaded through hole, and the sixth screw connects the upper end cover 3 with the upper end pressing sealing ring 6;
the shape of the lower end pressing sealing ring 7 is a seventh concentric ring body, the seventh concentric ring body of the lower end pressing sealing ring 7 is a revolution body, the lower end of the seventh concentric ring body of the lower end pressing sealing ring 7 is provided with seventh threaded through holes uniformly distributed in the circumferential direction, the inner side surface of the seventh concentric ring body of the lower end pressing sealing ring 7 is a seventh conical surface, and the diameter of the upper end of the seventh conical surface of the lower end pressing sealing ring 7 is larger than that of the lower end;
the axis of the revolving body of the lower end pressing sealing ring 7 coincides with the axis of the revolving body of the non-closed shell 1, the lower end pressing sealing ring 7 is positioned at the outer side of the lower end of the polytetrafluoroethylene annular membrane 2, the seventh conical surface of the lower end pressing sealing ring 7 is contacted with the lower end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane 2, a seventh screw is arranged in a fourth circular through hole of the lower end cover 4, the head of the seventh screw enters a seventh threaded through hole, and the seventh screw connects the lower end cover 4 with the lower end pressing sealing ring 7.
The application method of the device for realizing pressure relief through polytetrafluoroethylene membrane deformation comprises the following steps:
step 1: assembling a polytetrafluoroethylene annular membrane 2 with a non-closed shell 1;
step 2: assembling the lower end cover 4 with the polytetrafluoroethylene annular membrane 2;
step 3: assembling the throwing device 5 with the lower end cover 4;
step 4: assembling an upper end cover 3, a polytetrafluoroethylene annular membrane 2 and a throwing device 5;
step 5: the upper end pressing sealing ring 6 is assembled with the upper end cover 3, the upward force is given to the upper end pressing sealing ring 6 through a sixth screw, the upper end of the polytetrafluoroethylene annular membrane 2 is pressed by the sixth conical surface of the upper end pressing sealing ring 6 and the outer side surface of the first upper end conical bulge of the unsealed shell 1, so that the pressure intensity born by the upper end of the polytetrafluoroethylene annular membrane 2 is 0.8MPa;
step 6: assembling a lower end pressing sealing ring 7 with the lower end cover 4, and giving downward force to the lower end pressing sealing ring 7 through a seventh screw, wherein the seventh conical surface of the lower end pressing sealing ring 7 and the outer side surface of the first lower end conical bulge of the unsealed shell 1 tightly press the lower end of the polytetrafluoroethylene annular membrane 2, so that the pressure applied to the lower end of the polytetrafluoroethylene annular membrane 2 is 0.8MPa;
step 7: the high-energy fuel is filled in the closed inner cavity formed by the unsealed shell 1, the upper end cover 3, the lower end cover 4 and the throwing device 5, after the temperature rises, the high-energy fuel is heated and expanded, the volume is increased, the high-energy fuel extrudes the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane 2 through the first circular through hole of the unsealed shell 1, the polytetrafluoroethylene annular membrane 2 is elastically deformed and expanded outwards, the high-energy fuel enters the interlayer between the unsealed shell 1 and the polytetrafluoroethylene annular membrane 2, the unsealed shell 1 is prevented from being propped up, and the safety of the unsealed shell 1 is ensured.
The device for realizing pressure relief through polytetrafluoroethylene membrane deformation in this embodiment has the following working principle:
the high-energy fuel of the detonation warhead is contained in a sealed shell, and as the temperature increases, the volume of the high-energy fuel increases, and the shell is extruded, so that the shell is damaged.
Because the adopted unsealed shell 1 is unsealed, high-energy fuel can flow outwards through the unsealed shell 1, the outer wall of the unsealed shell 1 is sleeved with the polytetrafluoroethylene annular membrane 2, and the two are tightly attached to each other at the assembly position, but when the internal fuel flows outwards, the polytetrafluoroethylene annular membrane 2 can be jacked up, and the fuel enters an annular space between the unsealed shell 1 and the polytetrafluoroethylene annular membrane 2.
The polytetrafluoroethylene annular membrane 2 is made of polytetrafluoroethylene, and has enough strength on one hand, so that the polytetrafluoroethylene annular membrane cannot be broken after being expanded by high-energy fuel. On the other hand, the high-energy fuel has enough corrosion resistance and cannot be corroded by the high-energy fuel. In the third aspect, the material has certain rigidity and can generate certain deformation, and the space between the unsealed shell 1 and the polytetrafluoroethylene annular membrane 2 is increased by deformation, and the space can allow high-energy fuel expanded by the body to overflow in, so that the internal stress is regulated. The shell is prevented from being propped up due to the overlarge internal stress.
Meanwhile, no air exists in the inner cavity of the shell, when explosive explosion is thrown, no air is compressed in the fuel, three factors of burnup cannot be met at the same time, the phenomenon of pre-ignition cannot occur, and the power of the detonation warhead cannot be influenced.
The throwing device 5 contains explosive and is used for throwing high-energy fuel to form cloud clusters.
The upper end pressing sealing ring 6 is matched with the conical surface outside the upper end of the unsealed shell 1, and the conical surface matching has the advantages that after the two conical surfaces are connected through screws, the two conical surfaces are pressed more tightly, the polytetrafluoroethylene annular membrane 2 between the two surfaces can be clamped, and the upper end of the polytetrafluoroethylene annular membrane 2 is in a sealed state. The same applies to the lower end pressing seal ring 7.
The sixth conical surface of the upper end pressing sealing ring 6 and the outer side surface of the conical bulge of the first upper end of the unsealed shell 1 press the upper end of the polytetrafluoroethylene annular membrane 2, so that the pressure applied to the upper end of the polytetrafluoroethylene annular membrane 2 is 0.8MPa. So designed, it is considered that if the pressure is too large, the polytetrafluoroethylene annular membrane 2 is permanently deformed to lose its rebound ability, causing leakage thereat, and if the pressure is too small, the polytetrafluoroethylene annular membrane 2 is elastically deformed by an insufficient amount to seal. Experiments show that the sealing is realized without permanent deformation when the pressure of 0.8MPa is adopted.
The seventh conical surface of the lower end pressing sealing ring 7 and the outer side surface of the conical bulge at the first lower end of the unsealed shell 1 press the lower end of the polytetrafluoroethylene annular membrane 2, so that the pressure applied to the lower end of the polytetrafluoroethylene annular membrane 2 is 0.8MPa, and the same principle is adopted.
In experiments, it was found that when the diameter of the first circular through hole of the non-closed casing 1 is too large, the fuel is dispersed after the explosion of the dispersing device 5, and the fuel forms a larger jet at the first circular through hole of the non-closed casing 1, and the jet can influence the uniformity of the integral cloud formation of the fuel, and once the fuel is uneven, the subsequent explosion power is reduced.
Moreover, when the diameter of the first circular through hole of the unsealed casing 1 is too small, the solid phase material can be accumulated near the first circular through hole of the unsealed casing 1 in the process of repeatedly flowing through the first circular through hole of the unsealed casing 1 due to expansion and contraction of heat and cold, so that the device for realizing pressure relief through polytetrafluoroethylene membrane deformation in the embodiment fails once the blockage occurs.
Through partial theoretical calculation, staff summoning relevant working experience collectively discuss and decompose the problems, each module is independently subjected to test evaluation, and final test and evaluation results show that when the diameter of the first circular through hole of the unsealed shell 1 is 5-6 mm, the problems can be avoided, the design advantages of the device for realizing pressure relief through polytetrafluoroethylene membrane deformation can be embodied, the functions can be fully exerted, and the device for realizing pressure relief through polytetrafluoroethylene membrane deformation can be used for fully solving the technical problems.
In this embodiment, the diameter of the first circular through hole of the non-closed casing 1 is 5mm;
15 devices for realizing pressure relief through polytetrafluoroethylene membrane deformation in the embodiment are processed, the devices are used according to the using method of the devices, the devices are stored in environments of +85 ℃ and-55 ℃ respectively, the shells are not damaged, cloud clusters formed by fuel are flat cylinders after the throwing device 5 explodes, and no fire jump occurs, so that the device for realizing pressure relief through polytetrafluoroethylene membrane deformation in the embodiment is proved to be effective.
According to the device for realizing pressure relief through polytetrafluoroethylene membrane deformation, as the shell is not closed, the polytetrafluoroethylene annular membrane is sleeved outside the unsealed shell, and after high-energy fuel is heated and expanded, the high-energy fuel flows into the space between the unsealed shell and the polytetrafluoroethylene annular membrane through the unsealed shell, so that the internal stress is avoided being too large, and the safety of the shell is ensured. Meanwhile, no air exists in the inner cavity of the unsealed shell, no air exists between the unsealed shell and the polytetrafluoroethylene annular membrane, when explosive explosion is thrown, no air is compressed in the fuel, three factors of burning cannot be met at the same time, the phenomenon of pre-ignition cannot occur, and the power of the body detonation warhead cannot be influenced.
Example 2:
example 2 differs from example 1 in that:
in this embodiment, the diameter of the first circular through hole of the non-closed casing 1 is 6mm;
15 devices for realizing pressure relief through polytetrafluoroethylene membrane deformation in the embodiment are processed, the devices are used according to the using method of the devices, the devices are stored in environments of +85 ℃ and-55 ℃ respectively, the shells are not damaged, cloud clusters formed by fuel are flat cylinders after the throwing device 5 explodes, and no fire jump occurs, so that the device for realizing pressure relief through polytetrafluoroethylene membrane deformation in the embodiment is proved to be effective.
According to the device for realizing pressure relief through polytetrafluoroethylene membrane deformation, as the shell is not closed, the polytetrafluoroethylene annular membrane is sleeved outside the unsealed shell, and after high-energy fuel is heated and expanded, the high-energy fuel flows into the space between the unsealed shell and the polytetrafluoroethylene annular membrane through the unsealed shell, so that the internal stress is avoided being too large, and the safety of the shell is ensured. Meanwhile, no air exists in the inner cavity of the unsealed shell, no air exists between the unsealed shell and the polytetrafluoroethylene annular membrane, when explosive explosion is thrown, no air is compressed in the fuel, three factors of burning cannot be met at the same time, the phenomenon of pre-ignition cannot occur, and the power of the body detonation warhead cannot be influenced.
Claims (4)
1. The utility model provides a device through polytetrafluoroethylene membrane warp realization pressure release, includes upper end cover (3), lower extreme cover (4) and throws device (5), its characterized in that still includes not seal casing (1), polytetrafluoroethylene annular membrane (2), upper end pressure seal ring (6) and lower extreme pressure seal ring (7), wherein:
the non-closed shell (1) is in a first cylinder shape and is a revolving body, and the axis of the revolving body is perpendicular to the ground;
the upper end of the outer side surface of the first cylinder body is provided with a circle of first upper conical bulges, and the diameter of the upper end of each first upper conical bulge is larger than that of the lower end of each first upper conical bulge; the lower end of the outer side surface of the first cylinder body is provided with a circle of first lower-end conical bulges, and the diameter of the upper end of each first lower-end conical bulge is smaller than that of the lower end; the side wall of the first cylinder body is provided with four rows of first circular through holes from top to bottom, and eight first circular through holes in each row;
the shape of the polytetrafluoroethylene annular membrane (2) is a second cylinder, the second cylinder is a revolution body, and the polytetrafluoroethylene annular membrane is made of polytetrafluoroethylene;
the axis of the revolution of the polytetrafluoroethylene annular membrane (2) is coincident with the axis of the revolution of the unsealed shell (1), the polytetrafluoroethylene annular membrane (2) is positioned at the outer side of the unsealed shell (1), and the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane (2) is contacted with the outer side surface of the first cylinder of the unsealed shell (1);
the upper end cover (3) is in a third concentric circular plate shape and is a revolving body, and third circular through holes uniformly distributed in the circumferential direction are formed in the edge of the upper end face of the third concentric circular plate;
the axis of the revolution body of the upper end cover (3) is coincident with the axis of the revolution body of the unsealed shell (1), the upper end cover (3) is positioned at the upper end of the unsealed shell (1), and the lower end face of the third concentric circular plate of the upper end cover (3) is contacted with the upper end face of the first cylinder of the unsealed shell (1);
the lower end cover (4) is in a fourth circular plate shape and is a revolving body, and fourth circular through holes uniformly distributed in the circumferential direction are formed in the edge of the lower end surface of the fourth circular plate;
the axis of the revolving body of the lower end cover (4) coincides with the axis of the revolving body of the unsealed shell (1), the lower end cover (4) is positioned at the lower end of the unsealed shell (1), and the upper end face of a fourth circular plate of the lower end cover (4) is contacted with the lower end face of a first cylinder of the unsealed shell (1);
the shape of the throwing device (5) is a fifth cylinder and is a revolving body;
the axis of the revolution body of the scattering device (5) is overlapped with the axis of the revolution body of the non-closed shell (1), the lower end face of the fifth cylinder of the scattering device (5) is connected with the middle part of the upper end face of the fourth circular plate of the lower end cover (4), and the upper end of the outer side face of the fifth cylinder of the scattering device (5) is connected with the inner side face of the third concentric circular plate of the upper end cover (3);
the upper end pressing sealing ring (6) is in the shape of a sixth concentric ring body and is a revolving body, the upper end surface of the sixth concentric ring body is provided with sixth threaded through holes uniformly distributed in the circumferential direction, the inner side surface of the sixth concentric ring body is a sixth conical surface, and the diameter of the upper end of the sixth conical surface is smaller than that of the lower end of the sixth conical surface;
the axis of the revolution body of the upper end pressing sealing ring (6) coincides with the axis of the revolution body of the non-closed shell (1), the upper end pressing sealing ring (6) is positioned at the outer side of the upper end of the polytetrafluoroethylene annular membrane (2), the sixth conical surface of the upper end pressing sealing ring (6) is contacted with the upper end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane (2), a sixth screw is arranged in a third circular through hole of the upper end cover (3), the head of the sixth screw enters a sixth threaded through hole, and the sixth screw connects the upper end cover (3) with the upper end pressing sealing ring (6);
the lower end pressing sealing ring (7) is in the shape of a seventh concentric ring body and is a revolving body, the lower end surface of the seventh concentric ring body is provided with seventh threaded through holes uniformly distributed in the circumferential direction, the inner side surface of the seventh concentric ring body is a seventh conical surface, and the diameter of the upper end of the seventh conical surface is larger than that of the lower end of the seventh conical surface;
the revolving body axis of the lower end pressing sealing ring (7) coincides with the revolving body axis of the non-closed shell (1), the lower end pressing sealing ring (7) is positioned at the outer side of the lower end of the polytetrafluoroethylene annular membrane (2), the seventh conical surface of the lower end pressing sealing ring (7) is in contact with the lower end of the outer side surface of the second cylinder of the polytetrafluoroethylene annular membrane (2), a seventh screw is arranged in a fourth circular through hole of the lower end cover (4), the head of the seventh screw enters a seventh threaded through hole, and the seventh screw connects the lower end cover (4) with the lower end pressing sealing ring (7);
the diameter of the first circular through hole of the non-closed shell (1) is 5 mm-6 mm.
2. Device for achieving pressure relief by deformation of polytetrafluoroethylene membrane according to claim 1, characterized in that the diameter of the first circular through hole of the non-closed housing (1) is 5mm.
3. Device for achieving pressure relief by deformation of polytetrafluoroethylene membrane according to claim 1, characterized in that the diameter of the first circular through hole of the non-closed housing (1) is 6mm.
4. A method of using the device for effecting pressure relief by deformation of polytetrafluoroethylene membrane as claimed in any one of claims 1 to 3, comprising the steps of:
step 1: assembling a polytetrafluoroethylene annular membrane (2) with a non-closed shell (1);
step 2: assembling a lower end cover (4) with the polytetrafluoroethylene annular membrane (2);
step 3: assembling the throwing device (5) with the lower end cover (4);
step 4: assembling an upper end cover (3), a polytetrafluoroethylene annular membrane (2) and a throwing device (5);
step 5: the upper end pressing sealing ring (6) is assembled with the upper end cover (3), and the upward force is given to the upper end pressing sealing ring (6) through a sixth screw, the sixth conical surface of the upper end pressing sealing ring (6) and the outer side surface of the first upper end conical bulge of the unsealed shell (1) tightly press the upper end of the polytetrafluoroethylene annular membrane (2), so that the pressure intensity born by the upper end of the polytetrafluoroethylene annular membrane (2) is 0.8MPa;
step 6: assembling a lower end pressing sealing ring (7) with a lower end cover (4), and applying downward force to the lower end pressing sealing ring (7) through a seventh screw, wherein the seventh conical surface of the lower end pressing sealing ring (7) and the outer side surface of the conical bulge of the first lower end of the unsealed shell (1) tightly press the lower end of the polytetrafluoroethylene annular membrane (2) so that the pressure applied to the lower end of the polytetrafluoroethylene annular membrane (2) is 0.8MPa;
step 7: the high-energy fuel is filled in a closed inner cavity formed by the unsealed shell (1), the upper end cover (3), the lower end cover (4) and the throwing device (5), after the temperature is raised, the high-energy fuel is heated and expanded, the volume is increased, the high-energy fuel extrudes the inner side surface of the second cylinder of the polytetrafluoroethylene annular membrane (2) through the first circular through hole of the unsealed shell (1), the polytetrafluoroethylene annular membrane (2) is elastically deformed and expanded outwards, and the high-energy fuel enters an interlayer between the unsealed shell (1) and the polytetrafluoroethylene annular membrane (2), so that the unsealed shell (1) is prevented from being propped up, and the safety of the unsealed shell (1) is ensured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012213.7A CN115420150B (en) | 2022-08-23 | 2022-08-23 | Device for realizing pressure relief through polytetrafluoroethylene membrane deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211012213.7A CN115420150B (en) | 2022-08-23 | 2022-08-23 | Device for realizing pressure relief through polytetrafluoroethylene membrane deformation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115420150A CN115420150A (en) | 2022-12-02 |
| CN115420150B true CN115420150B (en) | 2023-06-09 |
Family
ID=84197585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211012213.7A Active CN115420150B (en) | 2022-08-23 | 2022-08-23 | Device for realizing pressure relief through polytetrafluoroethylene membrane deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115420150B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB671830A (en) * | 1949-04-14 | 1952-05-14 | Charles Paris | Improvements in ammunition cartridge cases |
| CN110645846A (en) * | 2019-10-28 | 2020-01-03 | 西安近代化学研究所 | Isobaric adjusting device for compensating liquid-phase charging volume changes at different temperatures |
| CN112414233A (en) * | 2020-11-03 | 2021-02-26 | 西安近代化学研究所 | Gelled solid-liquid phase mixed fuel filling shell with stirring function |
| CN112880486A (en) * | 2021-01-13 | 2021-06-01 | 西安近代化学研究所 | Reverse stroke self-locking lasting torque output device |
| CN112879566A (en) * | 2021-01-13 | 2021-06-01 | 西安近代化学研究所 | Radial sealing device for compensating insufficient elasticity of material by improving resilience capability of structure |
-
2022
- 2022-08-23 CN CN202211012213.7A patent/CN115420150B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB671830A (en) * | 1949-04-14 | 1952-05-14 | Charles Paris | Improvements in ammunition cartridge cases |
| CN110645846A (en) * | 2019-10-28 | 2020-01-03 | 西安近代化学研究所 | Isobaric adjusting device for compensating liquid-phase charging volume changes at different temperatures |
| CN112414233A (en) * | 2020-11-03 | 2021-02-26 | 西安近代化学研究所 | Gelled solid-liquid phase mixed fuel filling shell with stirring function |
| CN112880486A (en) * | 2021-01-13 | 2021-06-01 | 西安近代化学研究所 | Reverse stroke self-locking lasting torque output device |
| CN112879566A (en) * | 2021-01-13 | 2021-06-01 | 西安近代化学研究所 | Radial sealing device for compensating insufficient elasticity of material by improving resilience capability of structure |
Non-Patent Citations (1)
| Title |
|---|
| 云爆战斗部密封接口机械结构设计研究;许志峰;曹玉武;王世英;宋玉江;顾晓峰;;火工品(第02期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115420150A (en) | 2022-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112879564B (en) | Corrosion-resistant sealing device for generating continuous axial fitting force by utilizing Poisson effect | |
| CN105043172B (en) | A kind of liquid phase charge warhead internal stresses release device | |
| CN101975534A (en) | Insensitive electric igniter for nuclear blast valve | |
| CN109026445B (en) | Multi-nozzle solid attitude control engine blanking cover structure | |
| CN115420150B (en) | Device for realizing pressure relief through polytetrafluoroethylene membrane deformation | |
| CN102709505A (en) | Adjustable explosion relief valve of storage battery | |
| CN114566751B (en) | Pressure relief device of lithium battery safety valve | |
| CN112879566B (en) | Radial sealing device for compensating insufficient elasticity of material by improving resilience capability of structure | |
| CN115451759B (en) | Device for adjusting internal liquid expansion with heat and contraction with cold through shell axial expansion | |
| CN112033237B (en) | End face sealing device for uneven end face | |
| CN113948815B (en) | Pressure relief device and battery energy storage system | |
| CN115388722B (en) | Automatic regulating device for pressure in movable end cover | |
| CN113847428B (en) | Balanced pressure sealing device | |
| CN112096862A (en) | Anti-leakage device based on coaxiality measuring instrument | |
| CN115435643B (en) | Device for releasing internal stress by elastic deformation of wavy spring piece | |
| CN117954750B (en) | Explosion valve and sealing nail integrated sealing structure, top cover assembly and secondary battery | |
| CN115217975B (en) | Sealing device for converting axial force into radial extrusion bonding force | |
| CN112032306B (en) | Circumferential sealing device for circumferential uneven cylindrical surface | |
| CN112879563B (en) | Sealing device for compressing sealing ring to improve sealing performance by utilizing expansion pressure of liquid body | |
| CN112392952B (en) | Sealing connection device | |
| CN115217976B (en) | Radial sealing device suitable for circular cross section polytetrafluoroethylene sealing washer | |
| CN220037552U (en) | Flow gas release device | |
| CN113864452B (en) | Corrosion-resistant leakage-proof device for realizing full-space isobaric stress state through free movement of sealing ring | |
| CN117954751B (en) | Secondary cell top cap subassembly and secondary cell | |
| CN220930279U (en) | Pressure relief device of battery safety valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |